usb: host: xhci: print HCIVERSION on debug

When calling xhci_dbg_regs() we actually _do_ want to know XHCI's
version. This might help figure out why certain problems only happen
in some cases.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-dbg.c

@@ -37,10 +37,8 @@ void xhci_dbg_regs(struct xhci_hcd *xhci)
 			&xhci->cap_regs->hc_capbase, temp);
 	xhci_dbg(xhci, "//   CAPLENGTH: 0x%x\n",
 			(unsigned int) HC_LENGTH(temp));
-#if 0
 	xhci_dbg(xhci, "//   HCIVERSION: 0x%x\n",
 			(unsigned int) HC_VERSION(temp));
-#endif
 
 	xhci_dbg(xhci, "// xHCI operational registers at %p:\n", xhci->op_regs);